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Garden Grove chemical tank update: Cleanup efforts to begin and legal claims mount

Last updated: Friday, May 29, 2026 6:37PM GMT
Cleanup phase begins after chemical tank crisis in Garden Grove

GARDEN GROVE, Calif. (KABC) -- There is no longer a threat of explosion, fire or chemical leak for a damaged tank at the GKN Aerospace facility in Garden Grove, the Orange County Fire Authority announced on Tuesday night.

All evacuation orders were officially lifted at 7:30 p.m., allowing the final 16,000 evacuated Orange County residents to return home. Initially, 50,000 residents were evacuated from their homes last week.

A tank carrying 6,500 gallons of the highly toxic chemical methyl methacrylate (MMA) became unstable last week, causing the tank to heat up uncontrollably. For a few days, officials said the tank would either explode or spill out, and either outcome was inevitable.

Eventually, the tank cracked, allowing the pressure to release and eliminating the threat of a BLEVE, which stands for Boiling Liquid Expanding Vapor Explosion.

Then, crews worked a risky mission to confirm that the pressure had been released and to remove weather insulation from the outside of the tank to help the water be more efficient at cooling the temperature down.

Still, a threat remained for a fire or a small explosion. Firefighters continued to try to get the tank to stabilize and were eventually able to stop dousing it with water. On Tuesday afternoon, crews were seen freely walking around the tank and climbing on top of it.

By Tuesday night, OCFA declared that there was no longer a risk to surrounding residents and all evacuation orders were lifted. No injuries were reported.

The investigation into what caused the material in the tank to overheat is ongoing. Residents have already filed a class action lawsuit against GKN Aerospace.

Este blog se ofrece en Español, aquí.


KABC logo
May 23, 2026, 5:38 PM GMT

Temperature in chemical storage tank has increased, not cooled, OCFA says

The temperature inside a damaged chemical storage tank in Garden Grove has been rising by about 1 degree per hour, not cooling or stabilizing as previously believed, an OCFA official said Saturday morning.

Division Chief Craig Covey of the Orange County Fire Authority, the incident commander at the scene, said a drone on Friday had measured the tank's temperature at 77 degrees. However, a subsequent reading of a gauge indicated that the container's internal temperature was 90 degrees.

In a videotaped update posted on social media, Covay said officials are allowing the tank to "cure at a slower rate and reducing its (building) overpressure."

The OCFA is also "bringing people in from all over the country trying to come up with additional options," he added.

"Letting this thing just fail and blow up is unacceptable to us," Covey said.

He added that contingency plans are being employed in case the tank blows up or leaks, and the only people currently at risk are the firefighters and police officers on scene.

City News Service contributed to this report.

KABC logo
May 23, 2026, 3:40 PM GMT

Red Cross opens additional evacuation shelter as hazmat incident continues

The American Red Cross has established an additional shelter for those affected by the hazardous materials incident in Garden Grove, officials announced Saturday morning.

The shelter was opened at 1:30 a.m. at Oceanview High School, located at 17071 Gothard Street in Huntington Beach, the Orange County Fire Authority said.

"This will be a congregate dormitory shelter," the OCFA said in a statement, urging evacuees to bring their own medication if possible. Officials discouraged unsolicited donations at the shelter.

As of 8 a.m., no new announcements were made about the status of the overheated chemical storage tank.

"There are no scheduled press conferences today," the OCFA said in a statement on social media. "We will continue to provide incident updates throughout the day. The next scheduled update will be provided in the 9:00 hour."

Leanne Suter Image
May 23, 2026, 7:29 AM GMT

Evacuees face uncertainty amid chemical tank crisis: 'We all want to go home'

More than 40,000 people are under evacuation orders as a result of the chemical tank crisis in Garden Grove.

The line of evacuated residents stretched out the door at the shelter set up at Freedom Hall in Fountain Valley.

More than 40,000 people are under evacuation orders as a result of the chemical tank crisis in Garden Grove.

Neighbors joined forces as they searched for hotel rooms after the sudden called to evacuate their Orange County homes due to the danger.

"Got a knock on the door, and I was told we were supposed to leave so I did what I was told," said Jason Reid, who went to one of the shelters.

Neighborhoods across Garden Grove, Stanton and Anaheim suddenly became ghost towns.

After rushing out in the morning, some residents like Diego Espinoza and his mother were allowed to return briefly to grab medication and other vital supplies.

"I feel like the situation has escalated very quickly," Espinoza said. "It was pretty harsh to get out of the house very quickly. We forgot a lot of stuff. That's why we came back here."

While most have heeded the warnings, some are staying behind.

Several shelters have been set up for residents and their pets, with everyone worried about how long they may be out and what could happen to their neighborhoods.

"I think that's the worst part - just waiting and not knowing what's going to happen because we all want to go home," said Jacqueline Reigos, who also had to evacuate.

KABC logo
May 23, 2026, 6:23 AM GMT

New evacuation center opens in La Palma

A new evacuation center has been opened at John F. Kennedy High School at 8281 Walker St. in La Palma, Orange County fire officials say.

The evacuation center opens after Freedom Hall Shelter reached capacity.